KR20110061115A - Control method of the washing machine - Google Patents

Abstract

PURPOSE: A control method of a washing apparatus is provided to shorten a drying time by proper drying control. CONSTITUTION: A user throws the laundry into a washing apparatus. The washing apparatus launders a foreign material from the laundry. The washing apparatus rinses the separated foreign substance. The washing apparatus dehydrates the rinsed laundry. The washing apparatus dries the dehydrated laundry in the normal voltage of a heater according to the laundry. If the water content ratio of the laundry arrives at a set lowest water content ratio, the washing apparatus lowers a drying temperature in the drying of the laundry.

Description

Control method of the washing machine

The present invention relates to a control method of a laundry machine, and more particularly, to a control method of a laundry machine that can prevent heat deformation due to excessive drying of a laundry made of fibers weak to heat.

In general, a washing machine may be classified into a top loading type and a front loading type according to a method of putting laundry. The top-loading washing machine may be further divided into a type in which the drum rotates during washing and rinsing, and a type in which a pulsator provided inside the drum rotates.

The front loading type washing machine, the top loading type washing machine in which the drum rotates, is composed of a cabinet forming a large appearance, a tub installed inside the cabinet to accommodate washing water, and a drum rotatably installed inside the tub. Laundry is housed inside the drum. The drum rotates about a horizontal or vertical axis in the state in which the laundry is accommodated to perform the washing, rinsing, and dehydration.

Recently, a drying function is added to a washing function (a distinction from a washing course in the sense of a general 'laundry' including a washing-rinsing-dehydration course), or a steam supply device is provided to prevent wrinkles, smells, static electricity, and the like of clothes. Washing apparatuses with a refresh function for removing the oil have become widespread.

In general, the drying function is performed by the user selecting a preset drying course or separately setting a drying time. However, if a user mixes clothes made of heat resistant fibers and clothes made of heat weak fibers when drying the laundry, and the same drying temperature and drying time are applied, clothes made of heat weak fibers such as synthetic fibers may undergo thermal deformation. Can be.

That is, the periphery of the zipper or various accessory parts may be deformed by heat, and the fiber itself may be deflated or deformed, thereby causing a problem that the size or shape of the clothes is changed.

Therefore, there is a need for a method of controlling a washing apparatus that can prevent thermal deformation due to excessive drying.

It is an object of the present invention to provide a control method of a laundry machine that can prevent thermal deformation due to excessive drying of laundry made of fibers weak to heat.

In order to achieve the above object, the present invention comprises the steps of inputting the laundry object to the laundry machine; A washing step of washing foreign matters from the laundry object; A rinsing step of rinsing off the foreign matter separated from the laundry object; A dehydration step of dewatering the laundry object which has been rinsed in the rinsing step; And a drying step of drying the laundry object dehydrated in the dehydration step to a normal voltage of the heater according to the laundry object, wherein the drying step reaches a predetermined moisture content rate of the laundry object to be dried. The lower surface provides a control method for a laundry machine, further comprising a low temperature drying step of drying by lowering the drying temperature.

In the low temperature drying step, the voltage of the heater is controlled to a low temperature control voltage of 50% or less of the normal voltage.

When the moisture content of the laundry object to be dried in the low temperature drying step reaches a predetermined drying completion rate, further comprising a cooling step of cooling the laundry object by lowering the drying temperature or by turning off the heater (off) It features.

The method may further include a sensing step of measuring a moisture content of the laundry object to be dried.

The sensing step is characterized in that it continues in real time from the start time to the end time of the drying step.

As described above, the control method of the laundry machine according to an embodiment of the present invention is to control the drying temperature according to the moisture content of the laundry to prevent heat deformation of the fiber weak to heat and at the same time to shorten the drying time by appropriate drying control It works.

Hereinafter, a control method of a washing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a washing apparatus according to an embodiment of the present invention.

First, referring to Figure 1 will be described the general configuration of a laundry machine according to an embodiment of the present invention.

The washing apparatus includes a cabinet 10 forming an exterior, a cylindrical tub 12 supported horizontally in the cabinet 10 to store wash water, a drum 14 rotatably installed in the tub 12, It comprises a moisture supplier 16 for supplying steam into the drum (14). The drum 14 is rotated by a motor (not shown), and adjusts the rotational speed of the drum 14 by adjusting the actual operation rate of the motor.

The cabinet 10 is provided with an inlet opening 18 communicating with the inside of the drum 14 so that laundry can be put in and out of the front surface thereof, and the door 20 is pivotably installed to open and close the inlet opening 18. do.

One side of the cabinet 10 is provided with a water supply valve 22 and a water supply hose 24 for supplying water to the water supply 16. In addition, the water supply 16 is connected to one side of the water supply pipe 26, which is a passage for guiding and spraying the water generated in the water supply 16 into the drum (14).

The water supply valve 22 is connected to an external water supply source, and supplies the supplied water to the wash water or to the water supply 16. The moisture supplier 16 may be provided as a steam generator or a mist generator, and may generate steam or mist by heating water with a heater (not shown).

Although not shown in the drawing, the interior of the cabinet 10 is provided with a drying unit composed of an air duct, a blowing fan, a heater, and the like for supplying the drum 14 with the outside air after being heated.

In general, a washing machine having such a configuration is subjected to washing-rinsing-dehydration-drying process, and each process is performed by a user selecting a course preset to the washing machine or by a course arbitrarily designated by the user. The washing object is thus treated. Each course is set up in at least one or several stages.

However, when a user processes a laundry object, the user may classify and wash the laundry according to the type of cloth, or may classify and process the laundry according to a user's own standard. Therefore, the laundry object of a material such as cotton, which is resistant to heat, and the laundry object of a material such as synthetic fiber, which is weak in heat, may be mixed.

In the drying process, the user may select a specific drying course or set a drying temperature and time to dry the laundry object. At this time, if the material which is strong in heat and dry in cloth and the material which is weak in thin and dry fast are mixed together, the material which is weak in heat at the same temperature and drying time conditions may be relatively too dry.

Most fabrics made of synthetic fibers are hydrophobic, so they absorb less water and dehydrate more during the washing process. Therefore, there is a characteristic that the drying rate is low because the moisture content of the cloth itself is low.

Thermal deformation may occur around accessories such as a zipper of a laundry object due to excessive drying, and thermal deformation or shrinkage may occur due to excessive heat in a thin portion. Therefore, the present invention proposes a method of controlling the drying temperature according to the moisture content of the laundry object to be dried in order to prevent heat deformation caused by the object to be so dry and fast drying in the drying process overheating.

2 is a flowchart illustrating a control method of a washing apparatus according to an embodiment of the present invention, and FIG. 3 is a graph showing a drying step according to FIG. 2.

As shown in Figure 2 and Figure 3, the washing apparatus of the present invention is largely put into the washing object into the washing device (S100), washing step for washing foreign matter from the laundry object (S200), separated from the laundry object In the order of the rinsing step (S300) for rinsing the foreign matter, the dehydration step (S400) for dehydrating the laundry object rinsing completed in the rinsing step (S300), the drying step (S600) for drying the dehydrated laundry object in the dehydration step (S400) Controlled.

The washing apparatus of the present invention is controlled to further include a sensing step (S500) for measuring the moisture content of the laundry object to be dried, the sensing step (S500) is continued in real time from the start point to the end point of the drying step (S600) do. In addition, the drying step (S600) is composed of a low temperature drying step (S610) and a cooling step (S620).

Even during the progress of the drying step (S600), the drum 14 must continue to rotate so that the hot air is supplied evenly to the object to be dried, the motor continues to operate. However, the heater is not operated during the progress of the dehydration step and starts to operate only when the drying step S600 is performed.

The heater may dry the object to be dried at the normal voltage of the heater preset according to the object to be washed in the initial drying step (S600) of high moisture content. For example, the steady voltage may be set to 5400W.

General laundry has a high moisture content due to the nature of the material, but if the laundry material of low moisture content, such as waterproof synthetic fibers, is mixed, the laundry may be damaged when it is dried for a long time at a normal voltage. Therefore, when the moisture content of the object to be dried reaches a predetermined minimum moisture content, it is preferable to lower the drying temperature (low temperature drying step, S610).

That is, the sensing step () lasting in real time until the end of the drying step (S600) continuously detects the moisture content of the laundry to be dried to control the low temperature of the heater voltage when the moisture content reaches the preset minimum moisture content rate Lower the voltage to enter the low temperature drying step (S610).

For example, the low temperature control voltage may be set to 50% or less of the normal voltage. That is, if the normal voltage is 5400W, it may be set to 2700W.

In this case, the predetermined minimum moisture content rate may be set to about 7%.

Generally, when the moisture content is about 7%, it is judged that the laundry is finished to dry, so when the moisture content is about 7%, the laundry is almost dried. Therefore, when the moisture content rate of the object to be dried reaches the minimum moisture content rate, it is possible to prevent damage to the laundry by performing a low temperature drying at a low temperature control voltage.

Low temperature drying step (S610) may be carried out for about 5 to 7 minutes, the end of the low temperature drying step (S610) may be set between the moisture content of 2 to 7%. Sensing step () is carried out continuously until the low temperature drying step (S610).

When the low temperature drying step (S610) is finished, that is, when the predetermined low temperature drying step (S610) end moisture content rate (between 2-7%) is reached, the heater is turned off to lower the drying temperature or cool the laundry after drying is completed. The main cooling step (S620) is carried out. The cooling step S620 is terminated when the temperature inside the drum 14 sensed by a separate temperature sensor is less than or equal to a preset reference temperature, and may be set within about 5 minutes or more.

Meanwhile, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims set forth.

1 is a perspective view showing a washing apparatus according to an embodiment of the present invention.

2 is a flow chart illustrating a control method of a laundry machine according to an embodiment of the present invention.

3 is a graph showing a drying step according to FIG.

Claims (5)

An input step of injecting a laundry object into a washing apparatus; A washing step of washing foreign matters from the laundry object; A rinsing step of rinsing off the foreign matter separated from the laundry object; A dehydration step of dewatering the laundry object which has been rinsed in the rinsing step; And And a drying step of drying the laundry object dehydrated in the dehydration step to a normal voltage of a heater according to the laundry object. The drying step further comprises a low temperature drying step of drying by lowering the drying temperature when the moisture content of the laundry object to be dried reaches a predetermined minimum moisture content rate. The method of claim 1, In the low temperature drying step, the voltage of the heater is controlled to a low temperature control voltage of 50% or less of the normal voltage. The method of claim 2, When the moisture content of the laundry object to be dried in the low temperature drying step reaches a predetermined drying completion rate, further comprising a cooling step of cooling the laundry object by lowering the drying temperature or by turning off the heater (off) Method of controlling the washing machine characterized in that. The method according to any one of claims 1 to 3, And a sensing step of measuring a moisture content of the laundry object to be dried. 5. The method of claim 4, The sensing step is a control method of a washing machine, characterized in that lasting in real time from the start point to the end point of the drying step.

Images